Individual room duct and ventilation system for livestock production building

Abstract

The present invention relates to a duct and ventilation system for livestock production buildings. The building comprises a plurality of containment rooms for livestock, a pit beneath the room, an attic above the rooms, a ventilation duct for each room and a ventilation house coupled to the pit. The containment rooms have slatted floors. The attic includes a vent. Each ventilation duct includes a manually actuable air flow control valve. The ventilation house includes an exhaust fan and is adapted to draw air through the vent and through the attic to one of the ventilation ducts and into one of the rooms through the slatted floor and out via the ventilation house. The building may include a manifold area adjacent the rooms and in fluid communication with the attic. Ventilation ducts comprise a laminar polymer sheet having a generally rectangular shape and forming a corner generally parallel to first and second side edges, a second laminar and planar polymer sheet having a first edge and a second edge, and a plurality of brackets. The first edge of the second sheet attaches to the first sheet such that the second sheet is substantially parallel to the corner. The brackets position the first sheet and the second sheet in the room.

What is claimed is:  
     
       1. A duct for providing air distribution in a room having walls and a ceiling, comprising: 
       a first laminar polymer sheet having a generally rectangular shape, said first laminar polymer sheet including a first corner defining a first and second panel;  
       a second laminar polymer sheet having a first edge and a second edge, said first edge attached to said first laminar polymer sheet such that said second laminar polymer sheet is substantially parallel to one of said first and second panels; and  
       a plurality of brackets positioning said first laminar polymer sheet and said second laminar polymer sheet in the room.  
     
     
       2. The duct of  claim 1 , wherein said first edge of said second laminar polymer sheet is L-shaped. 
     
     
       3. The duct of  claim 1 , wherein said second edge of said second laminar polymer sheet attaches to the wall and said first laminar polymer sheet attaches to the wall and the ceiling. 
     
     
       4. The duct of  claim 1 , wherein said first laminar polymer sheet includes a second corner defining one of said first and second panels and also defining a third panel such that said second laminar polymer sheet is substantially parallel to at least one of said first, second and third panels. 
     
     
       5. The duct of  claim 4 , wherein said first laminar polymer sheet and said second laminar polymer sheet are attached to the wall. 
     
     
       6. The duct of  claim 4 , wherein said second edge of said second laminar polymer sheet attaches to said first laminar polymer sheet. 
     
     
       7. The duct of  claim 6 , wherein said first laminar polymer sheet is attached to the ceiling. 
     
     
       8. The duct of  claim 6 , wherein said second edge of said second laminar polymer sheet is L-shaped. 
     
     
       9. The duct of  claim 1 , wherein said first laminar polymer sheet includes a plurality of apertures for air distribution. 
     
     
       10. The duct of  claim 9 , further comprising a plastic collar inserted into each of said apertures.